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One person was killed and another injured in an accident on Broad Street near the New York Stock Exchange. The pickup truck hit at least two pedestrians at 45 Broadway at 1:30 p.m. Thursday, killing a 70-year-old man who was eating his lunch on the sidewalk. Ida Siegal reports. (Published Thursday, Aug. 23, 2012)

A private security worker for the New York Stock Exchange was killed and two other pedestrians were injured in an accident on Broad Street near the Exchange Thursday afternoon, authorities said.

A worker for the T&M Protection company was at the wheel of a pickup truck being used as a "barrier vehicle" to block road access to the stock exchange just before 1:30 p.m., authorities said. He was moving the truck forward to allow a vehicle to pass when he suddenly accelerated and slammed into a 70-year-old man eating lunch while standing on the sidewalk.

The man, identified as Sorel Deps-Medina of Queens, also worked for T&M Protection, the company confirmed. It wasn't clear if he and the driver knew each other.

"He just -- he collapsed. He was on the floor. They were trying to give him CPR. He lasted maybe 20 seconds, and I don't think he made it," said witness Aigne Goldsby, who described Deps-Medina as a "big guy," estimating he was 6 feet tall and at least 250 pounds.

Deps-Medina was taken to Beekman Downtown Hospital, where he was pronounced dead.

The 50-year-old driver, and two other pedestrians who were hit -- a 31-year-old woman and a 62-year-old man -- were also taken to Beekman Downtown. They were in stable condition.

The crash appears to be an accident and the driver remained on the scene, authorities said.

In a statement, T&M Protection CEO Robert S. Tucker said, "We are fully cooperating with the NYPD accident investigation. Our thoughts and prayers go out to the family of the victim."